html,body{
  margin: 0;
  padding: 0;
  background: #FAFAFC;
}
.content{
  width: 60%;
  margin-left: auto;
  margin-right: auto;
  background: #FFFFFF;
  min-height: 200px;
  padding: 60px 48px;
  box-sizing: border-box;
}

.el-menu-demo {
  display: flex;
  justify-content: center;
}
